Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c6aa7ef38acd294…

MALICIOUS

PDF

80.0 KB Created: 2021-03-10 19:57:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 005c0662c6a863833cd8d1f87d2181f7 SHA-1: 3609703630a1b3e5bdd6efad071a150291a8c6c2 SHA-256: 3c6aa7ef38acd2948af71c639d0d2b8dfa7a9af8346b93f8ed7a18717b65aed9
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier with high confidence. It contains a large number of external links, many pointing to disposable hosting, indicating a link farm or SEO manipulation tactic. One of the extracted URLs, https://botokaw.ru/123?utm_term=football+live+scores+news+apk, is suspicious and likely serves as a lure or redirector. No scripts were extracted, but the PDF structure and link farm heuristic suggest it's designed to drive traffic to malicious or deceptive sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://botokaw.ru/123?utm_term=football+live+scores+news+apk PDF link annotation
    • https://puwawegolawibot.weebly.com/uploads/1/3/2/6/132682739/pekumawekovon.pdfIn PDF document text
    • https://lenexemumuvag.weebly.com/uploads/1/3/1/4/131438583/1905031.pdfIn PDF document text
    • http://testrun.ru/chamonix_aiguille_du_midi_guidexler2.pdfIn PDF document text
    • https://duparumiwope.weebly.com/uploads/1/3/4/7/134707207/luniwagam.pdfIn PDF document text
    • http://riforemepenog.iblogger.org/abyssal_sire_pure_guide.pdfIn PDF document text
    • http://mists.space/mi_guia_de_aceites_esenciales_young_livingmtbgg.pdfIn PDF document text
    • http://katermore.ru/70427500254jfy3m.pdfIn PDF document text
    • http://hangzhoumetal.ru/broken_screen_app_freev6tld.pdfIn PDF document text
    • https://wagimudo.weebly.com/uploads/1/3/4/4/134475497/91c5e798a368576.pdfIn PDF document text
    • https://rutesusu.weebly.com/uploads/1/3/0/7/130776221/279133.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e3a4972-bfd0-48d1-a384-79e0caa02114/tin_tin_chinese_buffet_biddeford_maine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75594ba1-63e5-44d0-92e1-ebf1b5ce70b8/54457402501.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/117c25e7-d70f-48f5-900d-8d7a56e4f840/spoken_english_online_classes_in_chennai.pdfIn PDF document text
    • http://suziben.rf.gd/alecrim_dourado_partitura_piano.pdfIn PDF document text
    • http://fakomufe.epizy.com/cards_against_humanity_friends_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3135089b-ed88-41c7-b911-d2dbe0666bdb/casio_5302_battery.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4683a95a-ca7c-4bee-b78a-62a4ffb309a3/the_annotated_turing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1baf8350-3e8a-426c-9d7a-a53923f97764/bravos_xl_washer_code_f51.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abf0fa45-9a52-4885-8952-2572491c9915/susizujajodakase.pdfIn PDF document text
    • http://kiderirujefadag.epizy.com/graphite_nanosheets_in_water.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1ea73a1-76df-42fa-b126-fef664672341/navy_terminal_leave_policy.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e467.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE467 5240 bytes
SHA-256: 84fd73b71ab42a748714cb33383903b6595f326f918c35ee64e0689d550441f4
font_01_sfnt_off0000f662.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF662 11160 bytes
SHA-256: 991467961092f59c19375d7f02eae6b4102465e502d72eab41fa0af082260b7a
font_02_sfnt_off00011cc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CC2 16272 bytes
SHA-256: 2106828d1f37d967ec21123fc60eadcf5e3f5f2dac11bb42601bc639507eaa4d

Open this report in the interactive analyzer, or submit your own file for analysis.